Important: Haircolor and bleaches contain ingredients which may cause allergic and/or other types of reactions. A skin allergy test is required 48 hours before each use of a haircolor product. Bleaches contain persulfates. Bleaches and high-lift haircolor shades cannot be used on relaxed hair; for other haircolor shades, wait at least 14 days after bleaching, relaxing or perming before coloring. This is a safety summary. Read all product labeling and instructions completely prior to use.